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　　廢水類型：食品加工廢水

　　廢水特性：食(shi)品加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)包括谷(gu)類加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)、飲料生產(chan)廢(fei)水(shui)(shui)、水(shui)(shui)產(chan)品加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)、肉類加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)及釀酒工(gong)(gong)(gong)(gong)業(ye)廢(fei)水(shui)(shui)等。由(you)于大(da)多數的食(shi)品工(gong)(gong)(gong)(gong)業(ye)在加(jia)工(gong)(gong)(gong)(gong)過(guo)程中需要(yao)大(da)量(liang)用水(shui)(shui),所(suo)以食(shi)品加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)排(pai)放(fang)的廢(fei)水(shui)(shui)量(liang)很大(da),是我(wo)國水(shui)(shui)源污(wu)染(ran)大(da)戶之一,食(shi)品加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)COD排(pai)放(fang)量(liang)占工(gong)(gong)(gong)(gong)業(ye)廢(fei)水(shui)(shui)COD總排(pai)放(fang)量(liang)的110/,居輕(qing)工(gong)(gong)(gong)(gong)業(ye)行業(ye)第(di)二(er)位。食(shi)品加(jia)工(gong)(gong)(gong)(gong)的主(zhu)要(yao)原材料是農(nong)、漁、牧、林(lin)業(ye)產(chan)品,來源十分(fen)廣泛,且制(zhi)品種類繁多,所(suo)以其排(pai)出的食(shi)品加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)水(shui)(shui)質成分(fen)復雜,水(shui)(shui)質惡劣,若直(zhi)接排(pai)人水(shui)(shui)體,對環境的危害十分(fen)嚴重(zhong)。因此,處理好食(shi)品加(jia)工(gong)(gong)(gong)(gong)廢(fei)水(shui)(shui)對于環境的保護和人類的健康具有重(zhong)要(yao)意(yi)義。

　　處理工藝說明：食品(pin)加工(gong)廢(fei)水的處(chu)(chu)理(li)(li)(li)按作(zuo)用原(yuan)理(li)(li)(li)可分(fen)為:物(wu)理(li)(li)(li)處(chu)(chu)理(li)(li)(li)法(fa)(fa)(fa)(fa)、化學處(chu)(chu)理(li)(li)(li)法(fa)(fa)(fa)(fa)和生(sheng)物(wu)處(chu)(chu)理(li)(li)(li)法(fa)(fa)(fa)(fa)。每(mei)一種(zhong)方(fang)法(fa)(fa)(fa)(fa)又包括多種(zhong)工(gong)藝(yi)(yi)。物(wu)理(li)(li)(li)處(chu)(chu)理(li)(li)(li)法(fa)(fa)(fa)(fa)有篩濾(lv)、撇(pie)除、調節、沉淀、氣(qi)浮、過濾(lv)、微濾(lv)、離心分(fen)離等(deng)(deng),前五種(zhong)工(gong)藝(yi)(yi)主(zhu)要(yao)用于預處(chu)(chu)理(li)(li)(li)或一級處(chu)(chu)理(li)(li)(li),后三(san)種(zhong)工(gong)藝(yi)(yi)主(zhu)要(yao)用于深度處(chu)(chu)理(li)(li)(li);化學處(chu)(chu)理(li)(li)(li)法(fa)(fa)(fa)(fa)有中(zhong)和法(fa)(fa)(fa)(fa)、混凝(ning)法(fa)(fa)(fa)(fa)、電解法(fa)(fa)(fa)(fa)、氧(yang)(yang)化還原(yuan)法(fa)(fa)(fa)(fa)、離子交換法(fa)(fa)(fa)(fa)、膜分(fen)離法(fa)(fa)(fa)(fa)等(deng)(deng);生(sheng)物(wu)處(chu)(chu)理(li)(li)(li)工(gong)藝(yi)(yi)包括好(hao)氧(yang)(yang)生(sheng)物(wu)處(chu)(chu)理(li)(li)(li)工(gong)藝(yi)(yi)、厭氧(yang)(yang)生(sheng)物(wu)處(chu)(chu)理(li)(li)(li)工(gong)藝(yi)(yi)、穩定(ding)塘工(gong)藝(yi)(yi)、土地處(chu)(chu)理(li)(li)(li)工(gong)藝(yi)(yi)和由(you)上述工(gong)藝(yi)(yi)相結合而(er)(er)成的綜合生(sheng)物(wu)處(chu)(chu)理(li)(li)(li)工(gong)藝(yi)(yi)。而(er)(er)根據食品(pin)加工(gong)廢(fei)水BOD、COD值(zhi)高等(deng)(deng)特點,國內外廣泛(fan)采用的方(fang)法(fa)(fa)(fa)(fa)是生(sheng)物(wu)處(chu)(chu)理(li)(li)(li)法(fa)(fa)(fa)(fa)。